功能更新

Melskin/Controls/SplashWindow/MathHelper.cs

@@ -0,0 +1,9 @@
+namespace Melskin.Controls
+{
+    internal static class MathHelper
+    {
+        internal const double DBL_EPSILON = 2.2204460492503131e-016;
+
+        public static bool IsZero(double value) => Math.Abs(value) < 10.0 * DBL_EPSILON;
+    }
+}